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jadc-tem3

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Testing Liquid Viscosity

external image images?q=tbn:ANd9GcQW7F75JTVysnEiNgP88p6ULq5ZrunGkBNFJUKcilCp36tl5tFW

http://t1.gstatic.com/images?q=tbn:ANd9GcQW7F75JTVysnEiNgP88p6ULq5ZrunGkBNFJUKcilCp36tl5tFW

Broad Question

Which liquid has the most viscosity?

Specific Question

Will cooking oil, mountain dew, honey, or kool-aid have the greatest viscosity?

Variables

Independent Variable:

Liquids

Dependent Variable:

Time (sec)

Variables That Need To Be Controlled:

Marble going into the liquid. Putting liquids in the cups. Dumping out the liquids. The volume of liquid.

Hypothesis

I hypothesize that the honey will have the most viscosity followed by cooking oil, mountain dew then kool-aid.


Graph of Hypothesis

jadc_tem3_hypgraph.JPG



Experimental Design

I am going to conduct my experiment, which is to see which liquid has the most viscosity, in the kitchen of my house. There will be one other person needed in my experiment. That person will have to hold two marbles over the glass while i am doing the same. I am going to do ten trials in all to make sure I have reliable data to place in the science fair. I will put my data on a data table on the computer in Google docs so I will be able to access it at my house and at school I will put the data on after every trial. I plan to conduct my experiment by getting all the right materials. I plan on making sure I have someone at my house ready to test my experiment with me I will also make sure I have all of my measurements right while I am doing my test.

Materials List

1. 4 Tall glasses
2. Honey
3. Cooking Oil
4. Kool-Aid
5. Mountain Dew
6. 4 Marbles
7. Ruler
8. A Partner
9. Timer


Detailed Procedure

1. Gather Materials
2. Fill up the cups with the 4 different liquids
3. Fill the liquid up 8cm
4. Get partner
5. Have the partner hold two marbles above the liquid
6. Hold two marbles above the other two liquids
7. Drop the 4 marbles at the same time
8. time how far down they go down into the liquid
9. Record how far the marbles go down onto the data table
10. Put the data on the wiki page
11. Repeat step 5-10 nine more times


Background Research

Viscosity is a measure of fluids resistance to flow it describes the friction of a moving fluid.
In order for fluid to flow a force will have to slide through them like a marble or another type of solid object.
Thick liquids like motor oil or molasses are said to have a high viscosity and thin liquids like water or soda have a low viscosity.
Thin liquids flow easier than thicker liquids. Thick liquids slowly go around objects when thin liquids quickly go around the object.


References

Bodach , Vijaya K. States of Matter. Iowa, Logan: Perfection Learning, 2006. Print.
Dictionary.com. Random House, Inc., 2012. Web. 18 Jan. 2012.
Grubbs , Tandy. "Viscosity of simple liquids: Temperature Variation." http://www2.stetson.edu. Web. 18 Jan. 2012.
Specific Gravity And Viscosity of Liquids." http://www.csgnetwork.com. 6 July 2011. Web. 18 Jan. 2012.






Results


science_fair_results_graph.JPG


Data Table


Graphs

external image images?q=tbn:ANd9GcTr-8urUFMhHMeKO-Xel0nhj6vpFpYCFC8GPe6FwpG5f3Encgo6
http://t0.gstatic.com/images?q=tbn:ANd9GcTr-8urUFMhHMeKO-Xel0nhj6vpFpYCFC8GPe6FwpG5f3Encgo6


Data Analysis


Conclusion


The original purpose of this experiment was to find out which liquid had the most viscosity, out of honey (21.04), cooking oil (0.62), kool-aid (0.6), and mountain dew (0.46). The results of the experiment were that honey had the most viscosity followed by cooking oil, mountain dew, and then kool-aid. Five trials were done with four tests for each liquid.

Discussion

My hypothesis was that i thought that honey would have the most viscosity. My results do support my hypothesis. There is a relationship between the independent variable and the dependent variable. Some patterns and trends that my data shows are that there are many similarities between the data and there is also differences between honey and kool-aid. I think the tests I did went smoothly. This is because nothing went wrong and I got some strong data. If I could improve my experiment I would use a different liquid to replace the kool-aid because that one didn’t work too well. An interesting future study might involve finding which liquids would be best for the project because I just picked them at random.